Are mouth ulcers contagious?

Jun 08, 2022 Source: Cainiu Health
Dr. Zhang Liwen
Introduction
In general, oral ulcers are not contagious. Although the exact cause of oral ulcers remains unclear, they may result from a variety of factors—including impaired immunity, vitamin deficiencies, or psychological stress. Oral ulcers are typically self-limiting and recurrent, usually resolving spontaneously within 1–2 weeks. However, there is another type of ulcer known as herpetic stomatitis.

Many people around us suffer from oral ulcers, which have become a common clinical condition. Moreover, oral ulcers can affect individuals of any age. So, are oral ulcers contagious?

Are Oral Ulcers Contagious?

Generally speaking, oral ulcers are not contagious. Although the exact cause remains unclear, they are often associated with factors such as compromised immunity, vitamin deficiencies, or psychological stress. Oral ulcers are typically self-limiting and recurrent, usually resolving spontaneously within one to two weeks. However, there is another type—herpetic oral ulcers—which are caused by a virus. This virus is contagious and can spread through direct contact. Therefore, if you have herpetic oral ulcers, avoid kissing children.

Before initiating treatment for oral ulcers, it is advisable to consult a healthcare provider to determine the underlying cause. If the ulcer results from vitamin B deficiency, appropriate vitamin B supplementation may be recommended. If external factors, inflammation, or infection are involved, targeted therapy should be guided by an accurate diagnosis. Additionally, avoid spicy, greasy, or otherwise irritating foods.

In daily life, maintain a light, balanced diet rich in fresh vegetables and fruits, and adhere to regular, healthy sleep habits. We hope this information proves helpful to you.